pr2501 hope your finding the source of the leak. It was suggested by others that you need to be careful of hi pressure coming from the leak source. True. But you don't have to run the engine to find the leak. Just use the lift
pump to provide the pressure. If everything is cleaned up good and you have placed "tell tales: at the appropriate spots, then just pump away and see what gets wet first. You don't want to be taking the pump off until you find the leak.
And you must make a mechanical mark for timing. I used a cold chisel to hammer a line straight across the two mating surfaces. The pump can't go back on but one way to the splined shaft, but the mounting holes are slotted for adjustment and you don't need to reinvent the wheel
here if it was running right already.
I have steel washers on mine, and I think that is a good thing. A softer washer can deform when torque is applied to the banjo bolt to tighten up the lines.
Looking at the previous pics of you banjo bolt, you might wand to take some fine grit (1000) and put it on a flat surface. You should be able to sand off the corrosion
from the mating surface this way.
I hope you find the exact leak soon as I know this can drive a person nuts. It did me for several days.